Media mixing insert for turbine blade in turbine engine
The invention relates to a blade for a turbine comprising a blade wall, a first channel for guiding a first medium and a second channel for guiding a second medium that can be supplied to the turbine blade separately from the first medium. In order to combine both media, which are supplied separately, into one mixture, a turbine blade has least one chamber which is arranged in the interior or in the blade wall and said chamber is connected to said channels via a respective connection line. In order to provide a particularly simple component that is economical to produce, the chamber and/or the outlet conduit are a least partially delimited and/or formed by an insert accommodated in the wall.
1. A turbine blade for a turbine, comprising:
a blade wall;
a first passage for guiding a first medium;
a second passage for guiding a second medium that is fed to the turbine blade separately from the first medium;
a chamber arranged on the blade wall and connected to the first passage and the second passage that mixes the first medium and the second medium to form a mixture; and
an outlet line connected to the chamber that discharges the mixture from the chamber into a hot gas space; and
an insert arranged in the blade wall that at least partially delimits the chamber and the outlet line.
2. The turbine blade as claimed in claim 1 , wherein the blade wall in a surface facing the hot gas space comprises a recess for inserting the insert corresponding to a contour of the recess.
3. The turbine blade as claimed in claim 2 , wherein the contour of the recess is rectangular or circular.
4. The turbine blade as claimed in claim 1 , wherein the outlet line comprises a swirl element.
5. The turbine blade as claimed in claim 1 , further comprising a plurality of chambers connected to a plurality of outlet lines respectively.
6. The turbine blade as claimed in claim 5 , wherein each of the chambers and each of the outlet lines connected to the each of the chambers is delimited by a separate insert.
7. The turbine blade as claimed in claim 5 , wherein a group of chambers and a group of the outlet lines connected to the group of chambers is delimited by a separate insert.
8. The turbine blade as claimed in claim 1 , wherein the insert comprises a plurality of outlet lines.
9. The turbine blade as claimed in claim 1 , wherein the insert comprises a plurality of sections.
10. The turbine blade as claimed in claim 1 , wherein the insert comprises a plurality of stacked layer elements.
11. The turbine blade as claimed in claim 1 , wherein the insert comprises a porous material or foam on a hot gas side.
12. The turbine blade as claimed in claim 1 , wherein the outlet line leads to a region of the blade wall where a shock waves occurring in a hot gas impacts.
13. The turbine blade as claimed in claim 1 , further comprising a blade airfoil comprising a suction-side blade wall and a pressure-side blade wall.
14. The turbine blade as claimed in claim 13 , wherein the blade wall extends along a chord and a length of the chord is from a leading edge of the blade airfoil to a trailing edge of the blade airfoil.
15. The turbine blade as claimed in claim 14 , wherein the outlet line leads to a surface of the suction-side blade wall in a rear third of the chord length in a flow direction of a hot gas flowing around the blade airfoil.
16. The turbine blade as claimed in claim 1 , wherein a basic body of the blade wall is casted.
17. The turbine blade as claimed in claim 16 , wherein the insert is welded or soldered to the basic body.
18. A gas turbine with a turbine blade, comprising:
a blade wall;
a first passage for guiding a first medium;
a second passage for guiding a second medium that is fed to the turbine blade separately from the first medium;
a chamber arranged on the blade wall and connected to the first passage and the second passage that mixes the first medium and the second medium to form a mixture; and
an outlet line connected to the chamber that discharges the mixture from the chamber into a hot gas space; and
an insert arranged in the blade wall that at least partially delimits the chamber and the outlet line.